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<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="index.css" />
    <title>Document</title>
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  <body>
    <div id="lampadario">
      <input type="radio" name="switch" value="on" />
      <input type="radio" name="switch" value="off" checked="checked" />
      <label for="switch"></label>
      <div id="filo"></div>
      <div id="lampadina">
        <div id="sorpresa">
          <div id="footer">
            Hello there!
          </div>
          <div id="shadow">
            Hello there!
          </div>
        </div>
      </div>
    </div>
  </body>
</html>
